JPH04133118U - Vertical transport device for seedlings on a seedling stand - Google Patents

Abstract

(57) [Summary] [Purpose] The present invention makes it possible to reliably feed the seedling mat vertically on the seedling stand. [Structure] A roller 80-1 is provided on at least one of the contact portions of the vertical feeding drive cam 80 and the driven cam 81 of the seedling feeding mechanism 80A that vertically feeds the seedling mat.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention relates to a device for vertically transporting seedlings on a seedling stand installed in a rice transplanter. Ru.

0002

[Conventional technology]

Conventionally, as a vertical transport device for seedlings on a seedling stand installed in a rice transplanter, As shown in Publication No. 423, a cam-shaped screw shaft is used to horizontally feed the seedling stand so that it can reciprocate from side to side. The protrusion and the lever provided on the horizontal shaft are brought into contact, and the swinging lever is moved through the connecting rod. There is a mechanism in which an intermittent vertical feed mechanism is constructed by reciprocating the vertical feed pawl.

0003

[Problem that the idea aims to solve]

However, in the above-mentioned vertical seedling transport device, the cam of the screw shaft that constitutes the intermittent vertical transport mechanism Since the contact part between the protrusion and the lever provided on the horizontal shaft makes surface contact, the cam-like There is a misalignment in the contact position between the protrusion and the lever, which prevents smooth interlocking and results in a constant amount of seedlings taken. It was something I wouldn't do. Also, move the seedling stand side up and down against the planting nails. When changing the amount of seedlings taken, make sure that the gap between the cam-shaped protrusion and the lever is constant. Therefore, it was difficult to adjust the amount of seedlings taken.

0004 Therefore, since the number of seedlings to be planted is not constant, it is difficult to plant seedlings efficiently. This method not only cannot be used, but also has problems such as uneven growth of seedlings.

[0005]

[Means to solve the problem]

In this invention, a seedling feeding mechanism is installed on the seedling platform, and the seedling platform is moved in the same direction at the end of the left and right reciprocating stroke. The seedling feeding mechanism is rotated intermittently to feed the seedling mat vertically, and the planting claws are used to feed the seedlings. In a rice transplanter designed to perform planting, the vertical feeding drive that constitutes the seedling feeding mechanism is A roller is provided on at least one of the abutting parts of the moving cam and the driven cam. The present invention aims to provide a vertical conveyance device for seedlings on a seedling stand.

[0006]

【Example】

Embodiments of the present invention will be specifically described based on the drawings.

[0007] A shown in FIG. 1 is a riding rice transplanter, and the riding rice transplanter A has a self-propelled traveling section 1 The planting part 2 is connected to the rear of the machine via an elevating link mechanism 3, and the planting part 2 is connected to the elevating hydraulic system. It can be raised and lowered by a cylinder 4.

[0008] As shown in FIGS. 1 and 2, the traveling section 1 has an engine mounted on the front part of the fuselage frame 10. 11, and a driving section 12 is provided at the rear.

[0009] Then, the mission case 13 is connected to the engine 11 at the rear lower side of the fuselage frame 10. It is installed in a dynamically connected manner.

0010 In addition, on the lower front side of the fuselage frame 10, there are left and right floors, respectively, toward the left, right, lateral, and outer sides. The front axle cases 15, 15 are installed protrudingly, and the front wheels 16, 16 are attached to the tips of the cases 15, 15. I'm wearing it. 19 interlocks and connects the front axle case 15 and the transmission case 13 This is a power transmission shaft.

[0011] In addition, the rear axle case 17 is attached to the mission case at the rear of the fuselage frame 10. 13, and the rear wheels 18 and 18 are installed on the left and right sides of the same case, respectively. ing.

0012 20 also serves as a floor surface, gear shift guide, fender, seat mounting plate 20a, etc. It is a single-piece body made of highly rigid synthetic resin such as FRP, and machine-molded. It is stretched over the body frame 10.

[0013] Also, 21 is a bonnet, which includes the engine 11 and the steering wheel of the driving section 12, which will be described later. Covers 23 shafts.

[0014] Further, the above-mentioned driving section 12 has a steering shaft 23 erected immediately after the engine 11. The handle 24 is attached to the upper end of the shaft 23, and the handle 24 is attached directly behind the handle 24. A seat 25 is placed on the seat mounting plate 20a located at .

[0015] In addition, 30 is a gear shift lever located on the left side of seat 25, and 31 is on the left side of bonnet 21. The sub-shift lever 32, which protrudes upward from the side, is the planting part located on the right side of the seat 25. Lifting lever, 33 is the clutch pedal located on the left side of the bonnet 21, 34 is the bonnet This is the brake pedal located on the right side of cut 21.

[0016] In addition, as shown in FIG. The front end of the case 40 is attached so that it can swing left and right, and the float 41 is mounted below the case 40. Attach the seedling stand 42 above the case 40, and attach the planting claw to the rear end of the case 40. 43 is installed. 44 is between mission case 13 and planting mission case 40 This is the transmission shaft interposed in the

[0017] In addition, the elevating link mechanism 3 is located at the top and bottom of the rear of the aircraft frame 10, respectively. The front end of link 51 and the front ends of left and right lower links 45, 45 are moved upward by pivots 51a, 45a, respectively. The rear end of the top link 51 and the rear ends of the left and right lower links 45, 45 An elevating link mechanism side hitch part 61 is interposed between the two, and the hitch part 61 is placed in front of the planting part 2. It is removably connected to the planting side hitch part 49 which is installed upright.

[0018] At the front ends of the left and right lower links 45, 45, there are left and right lifting arms 46, 46, respectively. is installed in an upright manner, between the upper ends of both arms 46, 46 and the midway part of the fuselage frame 10. An elevating hydraulic cylinder 4 is interposed between them, and between the upper ends of both arms 46, 46 and the left and right lower Connecting rods 48, 48 are interposed between the rear ends of the links 45, 45.

[0019] In addition, in FIGS. 3 and 4, 70 is located at the back side of the lower end 42-1 of the seedling stand 42. The seedling stand support rail has a downward concave shape and can be moved left and right on the square support rod 71. It is placed.

[0020] 72 is a seedling take-out plate that is integrally connected to the support frame 71, and has a cutter for operating the planting claw 43. A groove 73 is provided. 74 intermittently vertically feeds the seedling mat 75 on the seedling stand 42 to A vertical conveyance device that feeds the seedlings to the side of the seedling take-out plate 72, which includes the seedling feeding belt 76 and the upper part of the drive side. It is composed of a roller 77, a lower driven roller 78, and the like.

[0021] The vertical conveyance device 74 has a structure in which the upper roller 77 side is intermittently driven. At the same time, the seedling mat 75 is placed on the slack side 76-1 of the seedling feeding belt 76, and the same seedling mat 75 is transported vertically. It is configured to send. 76-2 is the tension side of the seedling feeding belt 76.

[0022] In addition, the lower roller 78 is configured to have a small diameter, so that the distance between it and the planting case 79 can be reduced. It is configured so that it can be 80 is a vertical feed drive cam installed on the planting case 79 side. A roller 80-1 is rotatably pivotally attached to the end, and a driven roller 80-1 is provided on the back side of the seedling stand 42. The cam 81 can be pushed upward intermittently.

[0023] 82 is a cam connecting member to which the driven cam 81 is integrally attached, and it straddles the seedling feeding belt 76. is formed.

[0024] Then, the vertical feeding drive cam 80 and the driven cam 81 on the planting case 79 side and the cam connection member The seedling feeding mechanism 80A is composed of 82 and the like.

[0025] 83 is a pivot shaft that supports the cam connecting member 82, and 84 is a pivot shaft that supports the driven cam 81 and the cam connecting member 82. A cam return spring 85 presses downward, and 85 is a stopper gong provided on the cam connecting member 82. It is a stopper that receives the spring 86, and is adjustable with bolts and nuts. Ru. 87 is a mounting seat for mounting the stopper rubber 86, and 88 is a stopper mounting plate.

[0026] 89 is a lower operating arm connected to the driven cam 81, and 90 is a lower roller shaft.

[0027] In addition, 91 is a one-way clutch body installed on the upper roller 77 side, and the upper operating arm 92 and the lower A link mechanism 93A is constructed by interlockingly connecting the partial operating arm 89 with an intermediate link 93. There is.

[0028] In addition, the link mechanism 93A has the arm length R1 of the upper operating arm 92 and the lower operating arm. The arm length R2 of the cam 89 is formed so that R1<R2, and the rotation of the driven cam 81 is The amount is amplified and transmitted to the upper actuating arm 92 side.

[0029] In addition, 94 is a clutch shaft provided on one side clutch body 91, which is connected to the left and right sides through a joint 95. The drive shafts 96, 96 are interlocked and connected, and both ends of the drive shafts 96, 96 have clamps. A clutch body 98 having a claw 97 is fixed via a pin 99.

[0030] 100 is a bearing that pivotally supports the clutch body 98, and 101 is fitted concentrically to the outer periphery of the drive shafts 96, 96. The upper roller shaft is hollow and long in the horizontal direction. Upper rollers 77 are interlocked and connected for each strip. 102 prevents the drive shaft 96 from reversing Brake mechanism 103 is an on/off clutch that engages with clutch pawl 97 of clutch body 98 The upper roller shaft 101 is slidably connected to the upper roller shaft 101, and is supported by a spring body 104. It is always on.

[0031] 105 is a spring receiver for receiving the spring body 104, and 106 is for operating the on/off clutch 103. It can be operated freely with a hand lever via a wire 107.

[0032] 108 is the left roller that constitutes the upper roller 77, and the right roller is symmetrically formed. 109 and a central connecting portion 110. And the same roller on the left 108 and right roller 109 each have a large diameter at both ends, and a small diameter at the central connecting part 110. However, a gear-shaped uneven portion 112 is formed on the circumferential surface of the central recessed portion 111.

[0033] 113 is a convex portion formed at the center of the back surface of the seedling feeding belt 76, which is similar to the concave and convex portion of the upper roller 77. 112 and can be freely engaged. 114 is a convex portion provided on the surface of the seedling feeding belt 76; It is configured to be bitten into the bottom of the seedling mat 75.

[0034] 115 is a bearing part that supports the upper roller shaft 101 at the rib 116 position of the seedling stand 42; It is fixed to a back cover 117 that closes the back surface of the rib 116. 118 supports the lower roller shaft 90 The bearing part 119 is fixed to the center of the rear surface of the seedling stand 42 in a horizontally extending manner. This is a reinforcing plate.

[0035] In addition, 120 is a seedling adjustment link that adjusts the amount of seedlings to be taken, and it is connected up and down on the side of the seedling platform 42. The seedling mounting table 42 is moved relative to the planting claws 43. Also , As a result, as shown in FIGS. 6 and 7, the amount of seedling feeding is controlled by the driven cam 81 on the side of the seedling platform 42, Automatically changes depending on the relative distance to the vertical feed drive cam 80 with rollers on the planting section side. It is something that can be achieved.

[0036] Therefore, since one of the contact surfaces is a roller, the contact point is near the top of the roller. Since the seedlings are placed close to each other, the amount of feed changes in proportion to the distance the seedling table moves.

[0037] The embodiment of the present invention is constructed as described above, and the seedling feeding mechanism 80A is used to feed the seedlings onto the table. When feeding the seedling mat 75 on the 42 vertically downward, as shown in Fig. 3, use the roller 80 at the tip. -1, the vertical feed drive cam 80 intermittently rotates upward, causing the driven cam 81 to move upward. Push. Then, the cam connecting member 82 and the lower operating arm 89 are integrally operated upward. let

[0038] Therefore, via the intermediate link 93, the upper actuating arm 92 of the clutch body 91 is Rotate upward. This causes one clutch body 91 to rotate clutch shaft 94 clockwise. At the same time, the left and right drive shafts 96, 96 are simultaneously rotated. And shown in Figure 5 At the shaft ends of the drive shafts 96, 96, a clutch body 98 and an on/off clutch 103 are connected. When the upper roller shaft 101 is connected, the upper roller shaft 101 rotates together.

[0039] Then, the upper roller 108 that drives the seedling feeding belt 76 rotates by a certain amount, and The seedling mat 75 is vertically fed downward by the slack side 76-1 of the seedling feeding belt 76. .

[0040] Additionally, when the vertical feed drive cam 80 is rotated downward and restored to its original state, The driven cam 81, cam connecting member 82, and lower operating arm 89 are operated by a cam return spring 84. Rotate downward and return to the original state.

[0041] Also, since the lower actuating arm 89 is returned downward, the upper part of the clutch body 91 side Actuation arm 92 rotates counterclockwise. However, the one clutch body 91 is When rotating clockwise, it slips and does not drive the drive shafts 96,96.

[0042] Therefore, the upper roller shaft 101 and the upper roller 108 function as the brake mechanism 102. This is to maintain the stopped state.

[0043] Then, by repeating the above operation, the seedling mat 75 is sequentially conveyed vertically to the side of the seedling take-out plate 72. This is what you send.

[0044] As described above, according to the above embodiment, the seedling feeding mechanism 80A is provided on the seedling platform 42, and the seedling feeding mechanism 80A is While vertically feeding the seedling mat 75 by rotating the planting mechanism 80A intermittently, the planting claw 43 is used to feed the seedling mat 75 vertically. In a rice transplanter that plants seedlings, the vertical feeding drive that constitutes the seedling feeding mechanism 80A A roller 80-1 is provided on at least one of the contact parts of the cam 80 and the driven cam 81. Therefore, the vertical feed driving cam 80 and the driven cam 81 are always in constant contact with each other. This ensures stable vertical feeding of seedlings.

[0045] Furthermore, even if the amount of seedlings taken is changed by moving the seedling platform 42 up and down, If you adjust the mounting table 42 up or down, the amount of seedlings taken will change accordingly. A device that allows the amount of seedling feeding to be linked to the amount of seedlings taken without providing a correction link. It is.

[0046] Therefore, the number of parts can be reduced, and the weight and cost can be reduced. Moreover, the reliability of the seedling feeding mechanism has been improved, making it easier to plant seedlings. This can be done efficiently.

[0047]

[Effect of the idea]

According to the present invention, a seedling feeding mechanism is provided on the seedling platform, and the seedling feeding mechanism is rotated intermittently. In a rice transplanter that plants seedlings with a planting claw while feeding the seedling mat vertically. , Among the abutting parts of the vertical feeding drive cam and the driven cam that constitute the seedling feeding mechanism, a small part Since the roller is provided on at least one side, the operation of the driving cam and driven cam is circular. It is smooth and the contact condition is always constant, so the vertical feeding of the seedlings can be carried out stably. It is something that can be done.

[0048] In addition, even when changing the amount of seedlings taken by moving the seedling stand up and down, the same amount of seedlings If you adjust the platform up or down, the amount of seedlings taken will change accordingly, so special compensation is required. It is also possible to link the amount of seedlings fed to the amount of seedlings taken without creating a regular link. It is.

[0049] Therefore, the number of parts can be reduced, and the weight and cost can be reduced. Moreover, the reliability of the seedling feeding mechanism has been improved, making it easier to plant seedlings. This can be done efficiently.

[Brief explanation of drawings]

FIG. 1 is a side view of a riding rice transplanter equipped with a seedling stand according to the present invention.

[Fig. 2] A plan view of the rice transplanter.

FIG. 3 is a cross-sectional side view of essential parts of the seedling stand according to the present invention.

FIG. 4 is a rear view of the same.

FIG. 5 is a rear view of the same.

FIG. 6 is an enlarged side view showing a driving cam and a driven cam for vertical feeding.

FIG. 7 is an enlarged side view showing a state in which the driven cam side has been moved downward.

[Explanation of symbols]

43 Planted nails 75 Seedling mat 80 Drive cam for vertical feed 80A Seedling feeding mechanism 81 Followed cam

Claims (1)

[Scope of utility model registration request] [Claim 1] A seedling feeding mechanism 80A is provided on the seedling platform 42, and the seedling feeding mechanism 80A is intermittently rotated at the end of the left and right reciprocating stroke of the seedling platform 42 to vertically feed the seedling mat 75. While planting nails
In a rice transplanter that plants seedlings according to 43,
A roller 80-1 is attached to at least one of the abutting portions of the vertical feeding drive cam 80 and the driven cam 81 that constitute the seedling feeding mechanism 80A.
A vertical conveyance device for seedlings on a seedling stand, characterized by being provided with.